The OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible costs $0.3000/GB while the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) costs $0.0887/GB. SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers 70% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible vs SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) — Which Is Better Value?
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Specification Comparison
| Spec | OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible | SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) |
|---|---|---|
| Brand | OWC | SP Silicon Power |
| Capacity | 4TB | 4 TB |
| $/GB | $0.3000 | $0.0887 |
| Price | $1199.99 | $354.97 |
| Retailer | Newegg | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | nvme | ssd |
Price Across Retailers
OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible
SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25)
Which Should You Buy?
Based on current pricing data, the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers better value at $0.0887//GB compared to the OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible at $0.3000//GB — that's roughly 70% less per gigabyte.
The best deal for the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) is $354.97 at Amazon, while the OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible starts at $1199.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible and SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) product page for detailed specifications and price history.
Frequently Asked Questions
Is OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible or SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) a better deal?
As of August 2026, SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers better value at $0.0887//GB compared to OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible at $0.3000//GB. That is approximately 70% better value per gigabyte.
What is the price per GB of OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible?
The OWC 4TB Envoy Ultra Thunderbolt 5 (80Gb/s) Portable NVMe SSD - Over 6000MB/s - The First and Fastest Thunderbolt? 5 Portable SSD - Compatible is currently priced at $0.3000/GB ($1199.99 for 4TB) at Newegg.
Where can I buy SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) for the cheapest price?
The cheapest price for the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) is $354.97 at Amazon, which works out to $0.0887/GB.